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Biomedical subjects

C R Bellenger

Publications and source records attributed to C R Bellenger.

72 records · Page 4Linked to original sources
PubMed1979

A retrospective study of osteomyelitis in dogs and cats.

Thirty-nine cases of osteomyelitis in dogs and cats were recorded at the Sydney University Veterinary Hospital and Clinic over a three and a half year period. In 36 cases osteomyelitis was established prior to admission. Three cases of osteomyelitis became established from a total of 502 orthopaedic surgery cases seen at the hospital in this period. In the dog the most common source of infection was open reduction of closed fractures, while in the cat, the most common source of infection was an extension from soft tissue infection. More males than females were affected. Ten cases of osteomyelitis were treated successfully, twelve cases required amputation, while euthanasia was performed on thirteen other cases. The problems and principles of treatment of active osteomyelitis as reflected in the treatment of this series of cases have been described.

Amputation, Surgical↗
PubMed1979

Internal fixation of fractures of the third phalanx in three horses.

The technique of internal fixation of intra-articular fractures of the third phalanx using lag screw interfragmentary compression is described. Three cases are discussed and the successful treatment of infection and osteomyelitis described in one of them. Despite this potential complication internal fixation offers a better prognosis and also a more rapid return to work than non-operative treatments.

Animals↗
PubMedDate not supplied

Enteroplication in cats, using suture of N-butyl cyanoacrylate adhesive.

Enteroplication has been recommended to prevent recurrence of intussusception in dogs and cats. This study investigated the impact of enteroplication on subsequent function of the plicated small intestine as measured by transit time of barium impregnated polyethylene spheres (BIPS) and compared two methods of achieving enteroplication--sutures using polydioxanone and cyanoacrylate tissue adhesive. Twenty-two healthy young cats were used--four controls, nine sutured and nine glued. The mean +/-SD transit times before, one week after and four weeks after enteroplication were respectively 2.0+/-0.80 hours, 1.6+/-0.80 hours, 2.2+/-1.18 hours. There was no significant difference in transit time or in the time to create enteroplication in the two plicated groups. Maintenance of intestinal adhesion was greater for the sutured plications. There was no significant change in internal diameter with either technique. Adverse clinical signs after enteroplication were not severe, however, they were more prevalent in cats which had glued plication. The inflammation associated with the suture was of a greater depth initially but that associated with the adhesive was more widespread and persisted for the four weeks of the experiments. Enteroplication in cats was a relatively benign procedure which did not cause significant alterations in small intestinal function. However, cyanoacrylate tissue adhesive cannot be recommended for this clinical procedure.

Anastomosis, Surgical↗
PubMedDate not supplied

Intraoperative hemorrhage during patent ductus arteriosus ligation in dogs.

OBJECTIVE: To determine the prevalence of intraoperative hemorrhage in a consecutive series of dogs undergoing patent ductus arteriosus (PDA) ligation at a veterinary teaching hospital, and to describe strategies to reduce the risk of ductus perforation and deal with hemorrhage when it occurs. STUDY DESIGN: Retrospective clinical study. ANIMALS: Sixty-four dogs. METHODS: The records of all dogs undergoing PDA ligation at the University Veterinary Center, Sydney between May 1989 and February 1998 were reviewed and the prevalence and nature of complications identified. RESULTS: Serious hemorrhage occurred in 4 of 64 dogs (6.25%) that underwent PDA ligation. In all cases, hemorrhage resulted from perforation of the craniomedial aspect of the ductus while attempting to expose the tips of the dissecting forceps. Hemorrhage was controlled in 3 dogs by clamping the main pulmonary artery, digital compression of the descending aorta, and completion of ductus ligation during an approximately 5-minute period of circulatory arrest. The remaining dog exsanguinated during an unsuccessful attempt to locate, clamp, and ligate the bleeding point. The mortality rate for PDA ligation was I of 64 dogs (1.6 %). CONCLUSIONS: The technique described in this report permits simple ligation of a range of different ductus morphologies in dogs of varying breeds, weights, and ages. In the event of serious hemorrhage, prompt ventricular outflow occlusion and ductus ligation followed by rapid whole blood transfusion is life saving in most cases.

Animals↗
PubMedDate not supplied

Comparison of adhesive polyurethane membrane and polypropylene sutures for closure of skin incisions in cats.

Paired skin incisions were made on each side of four cats and closed with either interrupted polypropylene sutures or adhesive polyurethane membrane. The healing of these wounds was compared by gross appearance, break strength determination, and histologic examination. The adhesive polyurethane membranes were quicker and easier to apply, producing a more uniform closure than sutures both clinically and histologically. They adhered strongly to the skin, supporting more wound length than sutures for the first 7 days. There were no differences in break strength between closure techniques. Histologically, the wounds closed with adhesive polyurethane membrane were characterized by a milder inflammatory reaction and greater vascular infiltration than sutured wounds, especially early in the healing period.

Animals↗
PubMedDate not supplied

Hepatic lobectomy in the dog. A comparison of stapling and ligation techniques.

The left lateral hepatic lobe was removed in six dogs with a stapling instrument and in six dogs by blunt dissection and ligation. Both techniques were safe and effective. Lobectomy by dissection and ligation was slower and less complete than by stapling. Major intraoperative or postoperative hemorrhage did not occur with either method. Serum chemistry values were elevated after surgery in all dogs but did not differ significantly between treatment groups. Microscopic hemorrhage, necrosis, and inflammation of the lobectomy site were more pronounced after dissection and ligation than stapling.

Animals↗
PubMedDate not supplied

Urinary incontinence after prostatectomy in dogs.

Eleven dogs with prostatic disease were treated by total prostatectomy. Urinary incontinence persisted in three of nine dogs, two of which were also incontinent before surgery. The incidence of postoperative incontinence may be reduced by undermining the prostatic capsule to preserve as much prostatic urethra as possible. The risk of postoperative incontinence appeared greater if there was prostatic neoplasia or preoperative urinary incontinence.

Animals↗
PubMedDate not supplied

Transportal approach for attenuating intrahepatic portosystemic shunts in dogs.

A novel surgical approach, using portal venotomy during total hepatic vascular occlusion, was used to locate and attenuate congenital intrahepatic portosystemic shunts in nine dogs. Shunt location was consistent with a persistent ductus venosus in only two dogs. In the remaining seven dogs the shunts were window-like orifices arising from either the left (two dogs) or right portal vein branch (five dogs) and communicating with the ipsilateral hepatic vein or caudal vena cava. The transportal approach using total hepatic vascular occlusion consistently provided good access to the portosystemic shunts, including those with window-like communications. A 7 to 16 minute period of total vascular occlusion was well-tolerated hemodynamically, with few intraoperative complications. Intrahepatic shunts were successfully attenuated in eight dogs, while one dog with portal atresia was euthanatized. The postoperative course was complicated by high protein pulmonary edema (one dog), an encapsulated biliary pseudocyst (one dog) and uncontrollable hemorrhage caused by an uncharacterized coagulopathy (one dog). Three dogs required a second operation to further attenuate their shunts. The clinical condition of all seven surviving dogs was improved after surgery.

Animals↗
PubMedDate not supplied

Congenital interruption of the portal vein and caudal vena cava in dogs: six case reports and a review of the literature.

OBJECTIVE: To describe six dogs with congenital abnormalities involving the portal vein, caudal vena cava, or both. ANIMALS: Six client-owned dogs with congenital interruption of the portal vein or the caudal vena cava, or both. METHODS: Portal vein and caudal vena cava anatomy was evaluated by contrast radiography and visualization at surgery. Vascular casts or plastinated specimens were obtained in three animals. RESULTS: Portal blood shunted into the caudal vena cava in four dogs and the left hepatic vein in one. Two of these five dogs also had interruption of the caudal vena cava with continuation as azygous vein, as did an additional dog, in which the portal vein was normally formed. Portal vein interruption was present in 5 of 74 (6.8%) dogs with congenital portosystemic shunts evaluated at the Veterinary Teaching Hospital during the study period. CONCLUSIONS: Serious malformations of the abdominal veins were present in more than 1 in 20 dogs with single congenital portosystemic shunts. CLINICAL RELEVANCE: Veterinarians involved in diagnosis and surgery for portosystemic shunts should be aware of these potential malformations, and portal vein continuity should be evaluated in all dogs before attempting shunt attenuation.

Animals↗
PubMedDate not supplied

Successful management of an iatrogenic biliary pseudocyst in a dog.

A two-year-old, female Australian cattle dog was presented for treatment of a congenital, intrahepatic portosystemic shunt. The shunt was attenuated using a transportal approach. The dog developed an abdominal mass four weeks later. A 16-cm diameter, biliary pseudocyst arising from the hepatic surgical site was identified during ultrasonographic examination. The cyst was marsupialized to the right abdominal wall surgically. Bile-stained fluid drained from the stoma at an initial rate of 10 ml/kg body weight per day, decreasing to 1 ml/kg body weight per day over four weeks. The stoma closed five weeks after surgery, and no further evidence of fluid accumulation was detected ultrasonographically. Eighteen months postoperatively, the pseudocyst has not recurred.

Animals↗